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principal quantum number

American  
[prin-suh-puhl kwon-tuhm nuhm-ber] / ˈprɪn sə pəl ˈkwɒn təm ˈnʌm bər /

noun

Physics.

  1. the nonnegative, integral quantum number that defines the stationary orbits in the Bohr model of the atom.

principal quantum number Scientific  
/ prĭn′sə-pəl /

  1. See under quantum number

Etymology

Origin of principal quantum number

First recorded in 1920–25

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.